Horizontal shell-rolling mill



T. F. BAILY AND F. T. COPE. HORIZONTAL SHELL ROLLING MILL.

I APPLICATION FILED JUNE 14. 19'8- 1,353,982. Patented Sept. 28, 1920.

4 SHEETSSHEET I.

14 v nia T. F. BAILY AND F. T. COPE.

HORIZONTAL SHELL ROLLING MILL.

APPLICATION FILED JUNE 14.1918.

1,353,982. PatentedSept. 28,1920.

4 SHEETS SHEET 2.

HTTO/PNE) T. F. BAILY AND F. T. COPE. HORIZONTAL SHELL ROLLING MILL.

APPLICATION FILED JUNE I4. 1918. 1,353,982. Patentedsept. 28,1920.

4 SHEETS-SHEET 3.

T. F. BAILY.AND F. 1'. COPE. HORIZONTAL SHELL ROLLING MILL.

APPLICATION FILED JUNE I4. I9I8.

Patented Sept. 28, 1920.

4 SHEETSSHEET 4 //V V6 N T 0/? S T/mddawFBazZg 29 Fran/Z Z'Cop,

-lr A Z IA%I 1 UNITED STATES PATENT OFFICE.

TEADDEUS F. BAILY AND FRANK '1. COPE, 0F ALLIANCE, OHIO, ASSIGNORS TOTHE ELECTRIC FURNACE COMPANY, OF ALLIANCE, OHIO, A CORPORATION OF OHIO,

HORIZONTAL SHELL-ROLLING MILL.

Specification of Letters Patent.

Patented Sept. 28, 1920.

Application filed June 14, 1918. Serial No. 240,057.

To all whom it may concern Be it known that we, THADDEUS F. BAILY andFRANK T. Corn, citizens of the United States, both residing at Alliance,in the county of Stark and State of Ohio, have invented a. new anduseful Horizontal Shell- Rolling Mill, of which the following is aspecification.

This invention relates to horizontal rolling mills and more particularlyto a mill of this class designed especially for rolling artilleryshells.

The object of our invention is to'construct 4 illustrated in theaccompanying drawings, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportions, size and minor details of construction may be made withinthe scope of the appended claims, without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawings:

Figure 1 is a lan view of our device.

Fig. 2 is a ongitu'dinal section therethrough showing two substantiallyfinished shells upon the piercing bars.

Fig. 3 is a transverse section.

Fig. 4 is a longitudinal sectional view through a modified constructionof our shell rolling mill.

F Fig. 5 is a transverse section through imilar numerals of referenceindicate corresponding parts throughout the several figures of thedrawings.

In the construction of our horizontal shell rolling mill, upon the bed 1are a pair of standards 2, disposed in alinement and opposite eachother, at one end of the machine and a similar pair of standards 4: isar- I which is beveled upon its edges. Supported upon each pair ofstandards 2 and 4 and in direct alinement above the raised portion 5 isa transverse beam 6 which is beveled upon its lower face and slidablymounted between each raised portion 5 and its corresponding beam 6 is apair of sliding bearing blocks 7 and 7". Secured to each of the bearingblocks 7 and extending outwardly therefrom is a screw shaft 8 and uponeach of the shafts 8 is mounteda gear 9 which is internally threaded atits hub, the said threads fitting the threads upon the shafts, the gears9 meshing with gears 10 which are mounted upon and adapted to rotatewith a pair of overhead shafts 11. Each of the shafts 11 carries uponone of its ends a beveled pinion 12 which meshes with a similar pinion14 fixed to a shaft 15. Suitable gearing is arranged to rotate the shaft15 from a motor 16. All of the foregoing mechanism is of the usualconstruction, common to rolling mills known. as the screw downmechanism.

In each of the bearing blocks 7 is rotatably mounted one journal of aroll 17 the opposite journal of each roll being similarly mounted in oneof the bearing blocks 7 at the other end of the machine. It, will beseen that when current is fed to the motor 16 to drive it in onedirection, rotation of the shaft 15 will cause the gears 9 and 10 to berotated through the pinions 12 and 1%1, and the rotation of the saidgears 9 by virtue of their internally threaded hubs will cause theshafts 8 to be fed inward and likewise opposite rotation of the motor.16 will cause theshafts 8 to be withdrawn. The bearin blocks 7 and 7being secured to the sha s 8 and slidably mounted between theraised-portions 5 and the beams 6 will likewise be moved toward and awayfrom the longitudinal center line of the machine through the operationof the motor 16.

Secured at either end of the machine upon the raised portions 5 and inthe transverse center thereof are brackets 18, which form supports forbearings 19 and in each of said bearings is slidably mounted a piercingbar transverse center of the mill.

20. which is pointed upon its inner end as shown in F ig. 2. .Thepiercing bars are arranged upon the exact. transverse center of themachine and in line with the horizontal center of the rolls 17. Thepiercing bars extend outwardly in a longitudinal line from the machine,their outerportions be ing threaded as shown at 21. A standard 22 isarranged at either end of the machine. But one such standard is shownupon the drawings, the machine being broken away at the opposite end,the other standard however being an exact duplicate of the oneillustrated; A shaft 24 extends through each standard 22 and is drivenby a motor 25 and a worm 26 carried by the shaft is arranged to meshwith a worm gear 27 which is journaled within the standard 22. The wormgear 27 is internally threaded to fit the threads upon the portion 21 ofthe piercing bars. A jam nut 28 is screwed upon the threaded portion 21of each of the piercing bars to a predetermined point and is thensecured within a block 29 which is arranged'to slide upon a guide 30secured.

between the portion 5 and its corresponding standard 22 at either end ofthe machine. The piercing bars are thus held against r0- tation when theworm gear 27 is rotated.

It will be obvious that when the motors 25 are rotated in one directionthe 'worm gears 27 will be driven from the worms 26 and by reason of theinternally threaded portion of the worm gear meshing with the threadsupon the portion 21 of the piercing bars will cause the said piercingbars to be fed inwardly and reverse motion of themotor 25 will likewisecause the bars to be withdrawn. Extending transversely beneath themachine at the longitudinal center thereof is a shaft 31 extending froma motor 32. Mounted upon the shaft 31 is a worm 34 which meshes with aworm gear 35. The worm gear 35 is mounted upon a stub shaft 36 which iscarried by bearings upon a standard 37, and at either end of the stubshaft 36 is fixed a beveled pinion 38 which mesh with beveled pinions 39mounted in bearings 40. The pinions 39 are internally threaded and fitupon screws 41 which carry upon their upper ends a V-shaped trough 42.The trough 42 extends longitudinally of the mill, its center line beingin the exact Rotation of the motor 32 in one direction, will, throughthe worm 34 and worm gear 35 cause the stub shaft 36 to be rotated,which obviously rotates the pinions 38 and drives the pinions 39therefrom causing the screws 41 to be fed upwardly and to raise thetrough 42. Reverse motion of the motor 32 will likewise cause the troughto be lowered.

Extending beneath the base of the machine 1 and slightly at one sidethereof is a shaft 44 from a motor 45 and mounted upon this shaft is apainof pinions 46 arranged.

to engage pinions 47, each o'f'the pinions 47 being fixed upon avertical shaft 48. Each of the shafts 48 carries near its lower end asprocket49 and near its upper end a similar sprocket 50. Mounted instandards 51 in direct transverse horizontal alinementas shown. Thesprockets 52 are internally.

threaded and fit upon threaded shafts 56, the upper extremity of each ofthe shafts 56 being bifurcated and forming bearings for cutter disks 57.The sprockets 54 are similarly internally threaded and fit upon threadedshafts 58, the'lower ends of the shafts 58 being bifurcated .to formbearings for cutter disks 59. It will be seen from the foregoing thatwhen the shaft 44 is driven in one direction by the motor 45, thevertical shafts 48 will be rotated and drive the chains 53 and '55 whichin turn will rotate the sprockets 52 and 54 and by virtue of thethreaded interiors of the said sprockets meshing with the threads uponthe shafts 56 and 58 .will cause the said shafts to be fed inwardly andto move the cutters 57 and 59 toward the center line of themachine.

The rolls 17 as shown, are each formed with an enlarged annular portion60 at its longitudinal center; the cylindrical portion of each rolluponeach side of the enlarged portion curving outwardly and describing thecurve upon the forward end of the exterior of an artillery shell. 4

The rolls 17 will be driven by any ordinary and well known roll drivingmechanism, the couplers 61 between the rolls and the said drivingmechanism being shown at the left of Fig. 1. Each of the rolls 17 willbe rotated in the same direction.

In the operation of our shell rolling mill the roll rotating mechanismwill be put in operation to drive the rolls. The motor 16 will then berotated to feed' the shafts 8 outwardly and space the rolls apart. Themotor 25 will then be operated to move the piercing points 20 intoout-drawn position. The V-shaped trough 42 is now lowered withtheoperation of the motor 32 and a billet containing a suflicient quantityof heated steel to form two artillery shells is then placed in thetrough 42. The motor 32 is then operated to lift the trough until thebillet of steel has come into direct horizontal alinement with thecenters of the piercing points 20 and the rolls 17. vThe 42 thuselevated. The motor 25 is then again operated, this time in thedirection to feed the piercing points 20 inwardly, the said pointsadvancing until they have just begun to engage the opposite ends of thebillet of heated steel. The motor 25 is then stopped temporarily and themotor 16 operated to move the rotating rolls 17 inwardly. As soon as theannular extensions 60 upon the rolls come into contact with the billetof steel and begin to turn it, the motor 32 is again operated to lowerthe trough 42. The motor 25 is now again operated to feed the piercingpoints 20 inwardly and as the said points advance the rolls 17 arerolling the billet of steel into the form of two shells with theirpoints together. The exterior of the shells is thus shaped while thepiercing points are forming the explosive charge cavity. When the shellshave been exactly and accurately formed the rolls 17 are once more drawnapart and the motor 45 operated to advance the cutter disks 57 and 59which trim the shells to the exact length required. The cutters are thenwithdrawn and the mo tor 25 operated to withdraw the piercing points.The rolled shells are then removed and severed at the longitudinalcenter.

It will be seen that by our process artil-' lery shells can bemanufactured with extreme rapidity effecting an enormous saving of timeand labor over the present processes of making shells. It will also beseen that by the rolling process the effect upon the steel will be towrap the grain of the steel and cause it to run substantially spirallyof the shell.

In Figs. 4 and 5 We have illustrated a slightly modified form of ourshell rolling mill in which we employ three rolls-shown at 65. Thepiercing rods 66 as shown in Fig. 5 are positioned centrally betweenthethree rolls, which are equidistantly spaced to form a triangle. In thisform of mill the necessary mechanism for feeding the pierc ing pointsinwardly and outwardly is employed. The two lower rolls in this mill aremounted on stationary bearings and not designed to slide. The upper rollhowever is carried in the sliding bearings 67 in which aresecuredthreaded shafts 68 which cooperate with internally threaded pinions 69meshing with pinions 70 on the shaft 71. A motor 72 is employed to drivethe shaft. In the operation of this type of mill the motor72 is rotatedto raise the upper roll. The billet of heated steel is then dropped uponthe two lower rolls, the piercing points advanced and the upper rolllowered into contact with the billet.

Having fully described our invention what We claim as new and desire tosecure by Letters Patent, is:

1. In a device of the character described, a plurality of rotating rollsshaped to form the exterior of two artillery shells, the said rollsbeing adapted to have placed therebetween a billet of heated steel andmeans for moving'the said rolls into engagement with the said billet andto roll it into the form of artillery shells and piercing rods slidablymounted to enter the said billet from opposite sides and to form thereincavities while the said billet is being rolled,.the said cavities beingin the form of explosive charge chambers in finished artillery shells.

2.' In a device of the characterdescribed, a plurality of rotatingrolls, the exterior of said rolls forming the exterior of a pair ofartillery shells, the said rolls being adapted to have placedtherebetween a billet of heated steel, means for moving the said rollsinto engagement with the said billet to roll it in the form of a pair ofartillery shells,

piercing rods slidably mounted and means posite ends and form thereinexploslve charge cavities while the billet is being rolled.

4. A shell rolling mill including, a plurality of rotating rolls, meansfor positioning a billet of steel between and in the plane of thehorizontal centers of the rolls, means for moving the rolls intoengagement with the billet, the said rolls being shaped to form thebillet in'to artillery shells, piercing rods arranged to enter thebillet from opposite ends while the bi to form therein explosive chargecavities, and means for trimming the shells to the required length.

5. A shell rolling mill including a plurality of rotating rolls shapedto form the exterior of two artillery shells, the said rolls beingadapted to have placed therebetween a billet of heated steel, means formoving the rolls into engagement with the billet and Net is being rolled

